| 摘要 |
<p>A tool (fig. 1) for chip removing machining, including a basic body (1) and two replaceable cutting inserts (2,3). Each insert (2,3) includes a chip-removing main edge (12,19) situated between a chip surface (38,29) and a clearance surface (39,27). The first insert (2) precedes the second insert (3) during machining of a workpiece. The cutting inserts (2,3) overlap each other in a zone (Z1, fig. 5) defined by a borderline (24) along which a surface generated by the main edge (12) of the first cutting insert (2), with a time delay, is intersected by the main edge (19) of the subsequent, second cutting insert (3). The main edge (19) of the second cutting insert (3) that afterwards intersects the already generated surface, is formed along a chip surface (29) including primary (29a) and secondary (29b) sections, which have different shapes in cross-sections (figs. 8-10) spaced apart along the main edge (19) in order to form a primary part edge (19a) and a secondary, reinforced part edge (19b) arranged to intersect the already generated surface.</p> |
